CVE-2026-19589

{"dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": {"cveId": "CVE-2026-19589", "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "state": "PUBLISHED", "assignerShortName": "HashiCorp", "dateReserved": "2026-08-12T03:40:41.141Z", "datePublished": "2026-08-17T20:22:19.057Z", "dateUpdated": "2026-08-17T20:46:47.743Z"}, "containers": {"cna": {"affected": [{"defaultStatus": "unaffected", "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "product": "Packer", "repo": "https://github.com/hashicorp/packer", "vendor": "HashiCorp", "versions": [{"lessThan": "1.16.0", "status": "affected", "version": "1.7.0", "versionType": "semver"}]}], "credits": [{"lang": "en", "value": "This issue was reported to HashiCorp by George Chen."}], "descriptions": [{"lang": "en", "supportingMedia": [{"base64": false, "type": "text/html", "value": "<p>Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in Packer 1.16.0.</p><br/>"}], "value": "Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in Packer 1.16.0."}], "impacts": [{"capecId": "CAPEC-23", "descriptions": [{"lang": "en", "value": "CAPEC-23: File Content Injection"}]}], "metrics": [{"cvssV3_1": {"baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N", "version": "3.1"}, "format": "CVSS", "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "problemTypes": [{"descriptions": [{"cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal)", "lang": "en", "type": "CWE"}]}], "providerMetadata": {"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "shortName": "HashiCorp", "dateUpdated": "2026-08-17T20:22:19.057Z"}, "references": [{"url": "https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654"}], "source": {"advisory": "HCSEC-2026-29", "discovery": "EXTERNAL"}, "title": "Packer vulnerable to arbitrary file write via crafted plugin archive during installation"}, "adp": [{"metrics": [{"other": {"type": "ssvc", "content": {"timestamp": "2026-08-17T20:46:35.455178Z", "id": "CVE-2026-19589", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "role": "CISA Coordinator", "version": "2.0.3"}}}], "title": "CISA ADP Vulnrichment", "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-17T20:46:47.743Z"}}]}}

{"dataType": "CVE_RECORD", "containers": {"adp": [{"title": "CISA ADP Vulnrichment", "metrics": [{"other": {"type": "ssvc", "content": {"id": "CVE-2026-19589", "role": "CISA Coordinator", "options": [{"Exploitation": "none"}, {"Automatable": "no"}, {"Technical Impact": "partial"}], "version": "2.0.3", "timestamp": "2026-08-17T20:46:35.455178Z"}}}], "providerMetadata": {"orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-17T20:46:41.194Z"}}], "cna": {"title": "Packer vulnerable to arbitrary file write via crafted plugin archive during installation", "source": {"advisory": "HCSEC-2026-29", "discovery": "EXTERNAL"}, "credits": [{"lang": "en", "value": "This issue was reported to HashiCorp by George Chen."}], "impacts": [{"capecId": "CAPEC-23", "descriptions": [{"lang": "en", "value": "CAPEC-23: File Content Injection"}]}], "metrics": [{"format": "CVSS", "cvssV3_1": {"version": "3.1", "baseScore": 7.1, "baseSeverity": "HIGH", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N"}, "scenarios": [{"lang": "en", "value": "GENERAL"}]}], "affected": [{"repo": "https://github.com/hashicorp/packer", "vendor": "HashiCorp", "product": "Packer", "versions": [{"status": "affected", "version": "1.7.0", "lessThan": "1.16.0", "versionType": "semver"}], "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "defaultStatus": "unaffected"}], "references": [{"url": "https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654"}], "descriptions": [{"lang": "en", "value": "Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in Packer 1.16.0.", "supportingMedia": [{"type": "text/html", "value": "<p>Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in Packer 1.16.0.</p><br/>", "base64": false}]}], "problemTypes": [{"descriptions": [{"lang": "en", "type": "CWE", "cweId": "CWE-22", "description": "CWE-22: Improper Limitation of a Pathname to a Restricted Directory (Path Traversal)"}]}], "providerMetadata": {"orgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "shortName": "HashiCorp", "dateUpdated": "2026-08-17T20:22:19.057Z"}}}, "cveMetadata": {"cveId": "CVE-2026-19589", "state": "PUBLISHED", "dateUpdated": "2026-08-17T20:46:47.743Z", "dateReserved": "2026-08-12T03:40:41.141Z", "assignerOrgId": "67fedba0-ff2e-4543-ba5b-aa93e87718cc", "datePublished": "2026-08-17T20:22:19.057Z", "assignerShortName": "HashiCorp"}, "dataVersion": "5.2"}

{"affected": [{"affectedData": [{"defaultStatus": "unaffected", "platforms": ["64 bit", "32 bit", "x86", "ARM", "MacOS", "Windows", "Linux"], "product": "Packer", "repo": "https://github.com/hashicorp/packer", "vendor": "HashiCorp", "versions": [{"lessThan": "1.16.0", "status": "affected", "version": "1.7.0", "versionType": "semver"}]}], "source": "security@hashicorp.com"}], "cveTags": [], "descriptions": [{"lang": "en", "value": "Packer up to 1.15.4 is vulnerable to an issue in the third-party plugin installer that may allow unintended file system modification and could lead to code execution. A user who installs a plugin from a malicious or compromised source may be affected. This vulnerability (CVE-2026-19589) is fixed in Packer 1.16.0."}, {"lang": "es", "value": "Packer hasta 1.15.4 es vulnerable a un problema en el instalador de plugins de terceros que puede permitir la modificaci\u00f3n no intencionada del sistema de archivos y podr\u00eda conducir a la ejecuci\u00f3n de c\u00f3digo. Un usuario que instala un plugin de una fuente maliciosa o comprometida puede verse afectado. Esta vulnerabilidad (CVE-2026-19589) est\u00e1 corregida en Packer 1.16.0."}], "id": "CVE-2026-19589", "lastModified": "2026-10-23T16:10:00.313", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "LOCAL", "availabilityImpact": "NONE", "baseScore": 7.1, "baseSeverity": "HIGH", "confidentialityImpact": "LOW", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "CHANGED", "userInteraction": "REQUIRED", "vectorString": "CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:C/C:L/I:H/A:N", "version": "3.1"}, "exploitabilityScore": 1.8, "impactScore": 4.7, "source": "security@hashicorp.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-19589", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "partial"}], "role": "CISA Coordinator", "timestamp": "2026-08-17T20:46:35.455178Z", "version": "2.0.3"}}]}, "published": "2026-08-17T21:16:43.593", "references": [{"source": "security@hashicorp.com", "url": "https://discuss.hashicorp.com/t/hcsec-2026-29-packer-vulnerable-to-arbitrary-file-write-via-crafted-plugin-archive-during-installation/77654"}], "sourceIdentifier": "security@hashicorp.com", "vulnStatus": "Awaiting Analysis", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-22"}], "source": "security@hashicorp.com", "type": "Secondary"}]}

{}

{"affected": [{"configurations": [{"platform": ["64_bit", "32_bit", "x86", "arm", "macos", "windows", "linux"], "status": "affected", "versions": {"scheme": "semver", "value": "[1.7.0,1.16.0)"}}], "enrichment": {"confidence": 100.0, "confidence_source": "matching", "scores": [{"score": 100.0, "source": "matching"}]}, "original": {"product": "Packer", "source": "cna", "vendor": "HashiCorp"}, "product": "packer", "vendor": "hashicorp"}], "created": "2026-08-17T21:45:02.939840+00:00", "updated": "2026-08-17T22:00:03.832963+00:00", "vendors": ["hashicorp", "hashicorp$PRODUCT$packer"]}